Walaikumussalam
Order is correct but you need to make the niyat first then just pouring of water is not enough water should reach everywhere so please use your hand and make sure it reached everywhere and if not then used more water but it should reach everywhere and it should be from up to down and if there is any najasat it should be removed before ghusl and if any obstacle which restrict the water to reach to skin please remove that one.
Wassalam